"Split-Case"
Transfer Cases came factory in 8/80' - 1/90' FJ40, FJ60 and FJ62
Land Cruisers.
They derived the "split" name as they require being "split" to remove
or
install them on the vehicle unlike the earlier 1 piece cases. These
cases
came in at least 5 different configurations, most changes being minor
with
the exception of the idler shaft change. In April of 86', The idler
shaft
changed from its original 34mm OD, to a slightly larger 38mm OD. This
makes
external identification of the transfer cases rather easy. Simply use a
set of calipers to measure the idler shaft where it protrudes from the
rear
of the case. With the change in idler shaft dimensions, bearings, seals
and internal gears were also slightly changed.